I have a specific question for divers or others who have visited Roatan, Honduras. I have been there myself, and remember the biting sand flies as being really nasty. We saw folks whose legs were covered with welts. There was some specific antidote which worked better than even DEET, which I guess was uneffective. It was something weird like baby oil, or some Avon product or something. Does anyone know? My sister is going in March and I wanted to give her the "heads up". Thanks in advance.